At the moment an answer is no.See this topic about Apple Trailers support, you can use it for further discussion. It tells you few pending issues. Another one is I have found movie studios can customize Apple Trailers pages, so its quite hard to find internal videolinks for all movie pages.

I have a proof of concept ready but need to finish an implementation. I do not add it to the PS3MS source base, but to my external website to ps3ms rss converter tool. Someday in a future I will hack ps3ms sources to have a proper plugin system, then its usable out of the box.